Question

HELPPP!! a bag contains 2 white marbles and 7 purple marbles. Two marbles are drawn at random. One marble is not replaced

then a second marble is drawn.

What is the proability of selecting a purple marble and then a white marble .?
What is the proability of selecting two white marbles.
Is thre a greater chance of selecting two white marbles in a row or two puple marbles in a row . Show your work ,

Answer 1

For the first one. The probability is (7/9)(2/8)
For the second one. The probability is (2/9)(1/8)
Intuitively, there is greater chance of selecting two purple marbles in a row.
(7/9)(6/8) <- for 2 purple
(2/9)(1/8) <- for 2 white

Answer 2

I THANK YOU SO MUCH!!

Answer 3

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